{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:EE4NEGCXSVUTQFMT4QCBYY3DW5","short_pith_number":"pith:EE4NEGCX","canonical_record":{"source":{"id":"cond-mat/0409408","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-09-15T23:45:58Z","cross_cats_sorted":[],"title_canon_sha256":"eb0b7e7f6017b2dd8c88af3344a1d7a3eeead258f8c88844f60d1ff530dcebd2","abstract_canon_sha256":"683d28dc3089a3856a95d94a4fe3fb7511f1c069e8e06a4a69fbc3c56122d555"},"schema_version":"1.0"},"canonical_sha256":"2138d218579569381593e4041c6363b759922a3b1a0f8ce6dce6716154a028d2","source":{"kind":"arxiv","id":"cond-mat/0409408","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0409408","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0409408v1","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0409408","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"pith_short_12","alias_value":"EE4NEGCXSVUT","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"pith_short_16","alias_value":"EE4NEGCXSVUTQFMT","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"pith_short_8","alias_value":"EE4NEGCX","created_at":"2026-07-04T16:47:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:EE4NEGCXSVUTQFMT4QCBYY3DW5","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0409408","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-09-15T23:45:58Z","cross_cats_sorted":[],"title_canon_sha256":"eb0b7e7f6017b2dd8c88af3344a1d7a3eeead258f8c88844f60d1ff530dcebd2","abstract_canon_sha256":"683d28dc3089a3856a95d94a4fe3fb7511f1c069e8e06a4a69fbc3c56122d555"},"schema_version":"1.0"},"canonical_sha256":"2138d218579569381593e4041c6363b759922a3b1a0f8ce6dce6716154a028d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:47:03.574119Z","signature_b64":"9opEuN/EUWZYwdSQSmscIlyFeH9488ZPl5uyqPGAPC6s1LYLVb3f+e7YglrcHlX0kU4kGjcZookhZ1VooFfiDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2138d218579569381593e4041c6363b759922a3b1a0f8ce6dce6716154a028d2","last_reissued_at":"2026-07-04T16:47:03.573723Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:47:03.573723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0409408","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:47:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E31WY+7IZ/9BHMVIrMqLx3Sc+4xZ5x2KtB7Dic71Dd+qpqG8fkkyjaK0tcjruDFZuLCKiFZUloRDPhnL9jNsBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T15:51:36.653229Z"},"content_sha256":"6d882c176283606fa30572b5d4b71009c7d4b3e79cc023156ad4eb125d3b9c33","schema_version":"1.0","event_id":"sha256:6d882c176283606fa30572b5d4b71009c7d4b3e79cc023156ad4eb125d3b9c33"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:EE4NEGCXSVUTQFMT4QCBYY3DW5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effect of Nano Scale Fe Doping on Superconducting Properties of MgB2","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"E. Getin, J. Horvat, S. Soltanian, S.X. Dou, Y. Zhao, Z. Chen","submitted_at":"2004-09-15T23:45:58Z","abstract_excerpt":"Iron is an important sheath material for fabrication of MgB2 wires. However, the effect of Fe doping on the superconducting properties of MgB2 remains controversial. In this work, we present results of nano-scale Fe particle doping in to MgB2. The Fe doping experiments were performed using both bulk and thin film form. It was found that Fe doping did not affect the lattice parameters of MgB2, as evidenced by the lack of change in the XRD peak positions for MgB2. Because of the high reactivity of nano-scale Fe particles, Fe doping is largely in the form of FeB at low doping level while Fe2B was"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0409408","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0409408/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:47:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U8dGu8EMLF90czt9NFwRJHhqKFYclRoyT5yfBLzZkql+0WT5sw2j9lacUV5YgmzQNwDFcL9D3UoVTEKbkflrDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T15:51:36.654252Z"},"content_sha256":"4623557a891fa73ae16db9b885a241bda72ca020132874a77bd51faa5a308407","schema_version":"1.0","event_id":"sha256:4623557a891fa73ae16db9b885a241bda72ca020132874a77bd51faa5a308407"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EE4NEGCXSVUTQFMT4QCBYY3DW5/bundle.json","state_url":"https://pith.science/pith/EE4NEGCXSVUTQFMT4QCBYY3DW5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EE4NEGCXSVUTQFMT4QCBYY3DW5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-10T15:51:36Z","links":{"resolver":"https://pith.science/pith/EE4NEGCXSVUTQFMT4QCBYY3DW5","bundle":"https://pith.science/pith/EE4NEGCXSVUTQFMT4QCBYY3DW5/bundle.json","state":"https://pith.science/pith/EE4NEGCXSVUTQFMT4QCBYY3DW5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EE4NEGCXSVUTQFMT4QCBYY3DW5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:EE4NEGCXSVUTQFMT4QCBYY3DW5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"683d28dc3089a3856a95d94a4fe3fb7511f1c069e8e06a4a69fbc3c56122d555","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-09-15T23:45:58Z","title_canon_sha256":"eb0b7e7f6017b2dd8c88af3344a1d7a3eeead258f8c88844f60d1ff530dcebd2"},"schema_version":"1.0","source":{"id":"cond-mat/0409408","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0409408","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0409408v1","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0409408","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"pith_short_12","alias_value":"EE4NEGCXSVUT","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"pith_short_16","alias_value":"EE4NEGCXSVUTQFMT","created_at":"2026-07-04T16:47:03Z"},{"alias_kind":"pith_short_8","alias_value":"EE4NEGCX","created_at":"2026-07-04T16:47:03Z"}],"graph_snapshots":[{"event_id":"sha256:4623557a891fa73ae16db9b885a241bda72ca020132874a77bd51faa5a308407","target":"graph","created_at":"2026-07-04T16:47:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/0409408/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Iron is an important sheath material for fabrication of MgB2 wires. However, the effect of Fe doping on the superconducting properties of MgB2 remains controversial. In this work, we present results of nano-scale Fe particle doping in to MgB2. The Fe doping experiments were performed using both bulk and thin film form. It was found that Fe doping did not affect the lattice parameters of MgB2, as evidenced by the lack of change in the XRD peak positions for MgB2. Because of the high reactivity of nano-scale Fe particles, Fe doping is largely in the form of FeB at low doping level while Fe2B was","authors_text":"E. Getin, J. Horvat, S. Soltanian, S.X. Dou, Y. Zhao, Z. Chen","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-09-15T23:45:58Z","title":"Effect of Nano Scale Fe Doping on Superconducting Properties of MgB2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0409408","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:6d882c176283606fa30572b5d4b71009c7d4b3e79cc023156ad4eb125d3b9c33","target":"record","created_at":"2026-07-04T16:47:03Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"683d28dc3089a3856a95d94a4fe3fb7511f1c069e8e06a4a69fbc3c56122d555","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-09-15T23:45:58Z","title_canon_sha256":"eb0b7e7f6017b2dd8c88af3344a1d7a3eeead258f8c88844f60d1ff530dcebd2"},"schema_version":"1.0","source":{"id":"cond-mat/0409408","kind":"arxiv","version":1}},"canonical_sha256":"2138d218579569381593e4041c6363b759922a3b1a0f8ce6dce6716154a028d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2138d218579569381593e4041c6363b759922a3b1a0f8ce6dce6716154a028d2","first_computed_at":"2026-07-04T16:47:03.573723Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:47:03.573723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9opEuN/EUWZYwdSQSmscIlyFeH9488ZPl5uyqPGAPC6s1LYLVb3f+e7YglrcHlX0kU4kGjcZookhZ1VooFfiDg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:47:03.574119Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0409408","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d882c176283606fa30572b5d4b71009c7d4b3e79cc023156ad4eb125d3b9c33","sha256:4623557a891fa73ae16db9b885a241bda72ca020132874a77bd51faa5a308407"],"state_sha256":"c59fc339af82aff5b5211be8829db3aa4ee93aea337947e38e6c420db0f33531"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l2M2wvN9Yoh5La4Kw7MdwG+c319/A9FxHculIRH+gKuIs6HZJ3cZaslNbXYGDRCV3ilBJbY4M69gvxWSVzA5CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T15:51:36.659373Z","bundle_sha256":"03dd1c3c468531e953de5fbc7a68b22cf21c11a95116614637ede82b0d1139b4"}}